Electrical connector

This application is a continuation-in-part of U.S. application Ser. No. 11/832,231, filed on 1 Aug. 2007 and entitled “electrical connector”, now pending.

1. Field of the Invention

The present invention relates to an electrical connector, and in particular to an electrical connector having a shielding layer for preventing EMI (Electromagnetic Interference).

2. Description of the Prior Art

As computer and digital technology have advanced, the need for products to transmit data faster has been constant. To obtain the high data transmission speed, there are a number of electrical connectors with high terminal density available on the market such as LGA (Land Grid Array) connector. However, how to protect the transmission of data from EMI is an issue in the development of high terminal density technology. The ordinary method for preventing EMI is to install a layer of a metal or set a plated film on the surface of the insulating body to improve the quality of EMI protection. However, because the metal layer is only disposed on the surface of the insulating body, the influence of EMI between terminals to the properties of electrical connector are also huge when the electrical connectors have the high terminal density, thereby it reduces the ability of the electrical connector to transmit signals. In view of this, the inventor proposes the present invention to overcome the above problems.

An object of the present invention is to provide an electrical connector that reduces EMI efficiently between terminals and prevents the terminals from contacting the shielding layers that are disposed in the plurality of terminal-receiving holes.

In order to achieve the above object, the present invention provides an electrical connector which comprises an insulating body, a plurality of terminals, a plurality of shielding layers, and a plurality of insulating layers. The insulating body has a plurality of terminal-receiving holes. The shielding layers are mounted on the terminal-receiving holes. The insulating layers are mounted on the shielding layers, and the terminals are disposed in the terminal-receiving holes.

In order to achieve the above object, the present invention further provides and electrical connector which comprises an insulating body, a plurality of terminals, a plurality of insulating lumps. The insulating body has a plurality of terminal-receiving holes. Each of the insulating lumps has a fixing hole and the terminal is fixed therein. A plurality of shielding layers for preventing EMI and preventing contacting the terminals are mounted on the outer of the insulating lumps. The insulating lumps with the terminals are disposed in the terminals-receiving holes. The insulating lump is between the shielding layer and the terminal.

The advantages of the present invention lie in that the shielding layers are mounted on the insulating body and the insulating layers are mounted on the shielding layers, thereby reducing EMI between terminals and preventing the terminals from contacting the shielding layers in the terminal-receiving holes. By preventing EMI and static electricity the present invention also prevents the terminals from grounding and contacting each other. As a result, the stability of the electrical connector is improved, the structure is simple, and the cost is reduced.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a cross-sectional view showing a portion of the electrical connector of the present invention;

FIG. 2 is an enlarged perspective view showing a portion of the electrical connector of the present invention;

FIG. 3 is an enlarged perspective view of the top view showing a portion of the electrical connector while the terminals are uninstalled therein of the present invention;

FIG. 4 is an enlarged perspective view showing a portion of the circuit board connected to electrical connectors of the present invention;

FIG. 5 is an enlarged sectional view showing another embodiment of the present invention;

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